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Calculation method and safety regulations for load-bearing capacity
The load-bearing capacity of the universal wheel is the core indicator for selection, which needs to be comprehensively calculated based on the total weight of the equipment, the number of wheel sets, and the safety factor to avoid damage or safety hazards caused by overloading.
Mar 30,2026
The load-bearing capacity of the universal wheel is the core indicator for selection, which needs to be comprehensively calculated based on the total weight of the equipment, the number of wheel sets, and the safety factor to avoid damage or safety hazards caused by overloading. Firstly, it is necessary to clarify the calculation logic of single wheel load: single wheel load=(total equipment weight+rated load) ÷ number of wheel sets × safety factor. Among them, the selection of safety factor needs to be adjusted according to the usage scenario: the safety factor for indoor stable environments (such as office and home) is taken as 1.2-1.5; Frequent movement, uneven ground, or outdoor scenes should be taken as 1.5-2.0; Heavy equipment and high-altitude work equipment should be equipped with 2.0-3.0 to cope with sudden impacts or uneven forces. For example, a logistics cart with a total weight of 500kg, equipped with 4 universal wheels, if used on the warehouse floor (safety factor 1.5), the single wheel load capacity needs to be ≥ (500+0) ÷ 4 × 1.5=187.5kg, and a wheel body with a load capacity of 200kg or more should be selected. It should be noted that there is a difference between static and dynamic weight-bearing: dynamic weight-bearing (when equipment is moving) requires consideration of inertial impact force, which is usually 20% -30% lower than static weight-bearing. Therefore, when selecting, dynamic weight-bearing should be the core reference. In addition, there is a positive correlation between wheel diameter and load-bearing capacity. Under the same material, the larger the wheel diameter, the stronger the load-bearing capacity, and the smaller the rolling resistance, making pushing more effortless.
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